Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2007-02-27
2007-02-27
Casaregola, L. J. (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S778000, C060S790000
Reexamination Certificate
active
11513204
ABSTRACT:
A method for combustion in a combustor in a gas turbine including: fueling the center fuel nozzle with a fuel-rich mixture of gaseous fuel and air and fueling the outer fuel nozzles with a fuel-lean mixture of fuel and air; igniting the fuel-rich mixture injected by the center fuel nozzle while the fuel-lean mixture injected by the outer combustors is insufficient to sustain ignition; stabilizing a flame on the center fuel nozzle using the bluff body and while the outer fuel nozzles inject the fuel-lean mixture; staging fuel to the outer nozzles by increasing a fuel ratio of the fuel-lean mixture, and after the outer nozzles sustain ignition, reducing fuel applied to the center nozzle.
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Fossum Arthur James
Simons Derrick W.
Ziminsky Willy Steve
Casaregola L. J.
General Electric Company
Nixon & Vanderhye P.C.
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